Annotations: 2P0D

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Cystatin	e2p0dA1	A: alpha bundles	X: Profilin-like	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Cystatin	ECOD (develop294)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.30.29.30	Mainly Beta	Roll	PH-domain like	Pleckstrin-homology domain (PH domain)/Phosphotyrosine-binding domain (PTB)	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00169	PH domain (PH)	PH domain	PH stands for pleckstrin homology.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Rho GTPase-activating protein 9	binding ion binding phosphatidylinositol-3,4,5-trisphosphate binding anion binding phospholipid binding lipid binding phosphatidylinositol phosphate binding phosphatidylinositol binding small molecule binding GTPase regulator activity enzyme regulator activity enzyme activator activity GTPase activator activity molecular function activator activity binding ion binding phosphatidylinositol-3,4,5-trisphosphate binding anion binding phospholipid binding lipid binding phosphatidylinositol phosphate binding phosphatidylinositol binding small molecule binding GTPase regulator activity enzyme regulator activity enzyme activator activity GTPase activator activity molecular function activator activity nucleoside-triphosphatase regulator activity molecular function regulator activity	cellular response to stimulus regulation of biological process regulation of signaling regulation of cellular process small GTPase-mediated signal transduction response to stimulus signaling regulation of small GTPase mediated signal transduction biological regulation regulation of signal transduction intracellular signal transduction cell communication regulation of intracellular signal transduction regulation of response to stimulus intracellular signaling cassette cellular response to stimulus regulation of biological process regulation of signaling regulation of cellular process small GTPase-mediated signal transduction response to stimulus signaling regulation of small GTPase mediated signal transduction biological regulation regulation of signal transduction intracellular signal transduction cell communication regulation of intracellular signal transduction regulation of response to stimulus intracellular signaling cassette regulation of cell communication cellular process signal transduction	cellular anatomical structure extracellular region membrane-bounded organelle vesicle lumen intracellular anatomical structure intracellular vesicle membrane-enclosed lumen cytoplasmic vesicle lumen secretory granule lumen intracellular membrane-bounded organelle endomembrane system intracellular organelle lumen intracellular organelle cytoplasmic vesicle cellular anatomical structure extracellular region membrane-bounded organelle vesicle lumen intracellular anatomical structure intracellular vesicle membrane-enclosed lumen cytoplasmic vesicle lumen secretory granule lumen intracellular membrane-bounded organelle endomembrane system intracellular organelle lumen intracellular organelle cytoplasmic vesicle organelle lumen organelle secretory granule secretory vesicle cytoplasm vesicle cytosol cell periphery plasma membrane membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR000198	Rho GTPase-activating protein domain	Domain
A	IPR001849	Pleckstrin homology domain	Domain
A	IPR001452	SH3 domain	Domain
A	IPR036020	WW domain superfamily	Homologous Superfamily
A	IPR036028	SH3-like domain superfamily	Homologous Superfamily
A	IPR011993	PH-like domain superfamily	Homologous Superfamily
A	IPR008936	Rho GTPase activation protein	Homologous Superfamily
A	IPR035465	Rho GTPase-activating protein 9, SH3 domain	Domain
A	IPR050729	Rho GTPase-activating protein	Family
A	IPR001202	WW domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: Q9BRR9	coronary vasospasm Liver Cirrhosis, Experimental invasive ductal breast carcinoma medulloblastoma pancreatic intraductal papillary-mucinous neoplasm spina bifida heart disease non-small cell lung carcinoma periodontitis ulcerative colitis interstitial cystitis malignant glioma osteosarcoma Sjogren syndrome

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.